摘要
随机接入过程作为实现UE初始接入和上行同步的重要过程,在NB-IoT中,它在LTE系统的基础上对其进行了相应的简化和修改。通过与LTE系统中的随机接入过程进行对比,对NB-IoT中目前仅支持的基于竞争模式的随机接入过程进行了深入的分析,并搭建了基于TTCN-3的一致性测试平台,验证了随机接入过程与标准的一致性。
As an important process of UE initial access and uplink synchronization, the random access procedure is simplified and modified on the basis of LTE system in NB-IoT. Through the random access procedure in LTE system, a random access procedure based on competitive mode which is currently supported by NB-IoT is deeply analyzed and a conformance test platform based on TYCN-3 is built to verify the consistency of the random access procedure with the standard.
出处
《电子技术应用》
2018年第2期75-79,87,共6页
Application of Electronic Technique
基金
国家科技重大专项(2012ZX03001024
2017ZX03001021)
